I can't install/uninstall!

A couple of days ago I've had a chrome-related problem so I tried to uninstall AVG FREE  but now I have MORE problems… 
When I boots Windows 7 there are 2 message errors: "following AVG processes failed: avguix.exe" and "exception unknown software error (0x80000003)"
Reading here and there i've tried many solutions… First of all, AVG remover doesn't help. 
When I try to uninstall AVG PROTECTION the operations fail for an error code 0xe0010002.
When I try to install AVG FREE a popup appears "you have already installed latest version (error 0xe001f992)"
What can I do?

PS in Task Manager there's a process that I can't stop, AVGUI.EXE, it's related to my problem?

Hi Alex,

We apologize for the inconvenience caused. Please Download and run AVG Clear tool: https://share.avg.com/steam/PSP/AVG2017/AVG_Clear.exe . This tool will help with removing antivirus component of AVG 2017 and its traces.
Open tool
User Account control - click "Yes"
Windows safe mode - click "No"
Choose installed version (AVG Free, AVG Internet Security)
Click "Uninstall"
Click "Restart computer"

If issue persists, please get back to us and we will help you further.

Thank you!

Hi Alex,

We apologize for the inconvenience caused. Please Download and run AVG Clear tool: https://share.avg.com/steam/PSP/AVG2017/AVG_Clear.exe . This tool will help with removing antivirus component of AVG 2017 and its traces.
Open tool
User Account control - click "Yes"
Windows safe mode - click "No"
Choose installed version (AVG Free, AVG Internet Security)
Click "Uninstall"
Click "Restart computer"

If issue persists, please get back to us and we will help you further.

Thank you!